Transmitter Features: Technology: Radio Frequency Frequency: 2.4GHz Light Color: Red Wireless Cursor Control Distance: 50FT Material: Plastic Color: Black PPT Remote Control Distance: 100-165FT Light Control Distance: 330ft Max Output: Less than 5mW Working Voltage: 1.5V Sleep Current: less than 10uA Dimension: 5.3 x 1.6 x 0.9 inch Receiver Features: Operation System: XP, Windows 7/8, OS, Linux, Android USB Version: USB 1.1, compatible with USB 2.0, USB 3.0 Working Voltage: 5V DC About this item: Air Mouse Presentation Clicker for PowerPoint presentations combines the function of air mouse with wireless cursor control button and left/right mouse button, which makes it like a true mouse. With it in your hand, you can be free from the keyboard and make your presentation more efficient. Package Contents: 1 x Wireless Presenter Note: If the appearance of the buttons is different, it has no effect on the product. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.